LTC3619BIMSE#PBF

Active

Analog Devices

400MA/800MA SYNCHRONOUS STEP-DOWN DC/DC WITH AVERAGE INPUT CURRENT LIMIT

Deep-Dive with AI

Search across all available documentation for this part.

DocumentsR457 Reliability Data Datasheet

LTC3619BIMSE#PBF

Active

Analog Devices

400MA/800MA SYNCHRONOUS STEP-DOWN DC/DC WITH AVERAGE INPUT CURRENT LIMIT

Deep-Dive with AI

DocumentsR457 Reliability Data Datasheet

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3619BIMSE#PBF

Current - Output	800 mA, 400 mA
Frequency - Switching	2.25 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	3 Lead, 0.118 in
Package / Case	Exposed Pad, 10-TFSOP, 10-MSOP
Supplier Device Package	10-MSOP-EP
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.5 V
Voltage - Output (Max)	5 V
Voltage - Output (Min/Fixed)	0.6 V

LTC3619B Series

400mA/800mA Synchronous Step-Down DC/DC with Average Input Current Limit

Part	Package / Case	Package / Case	Mounting Type	Number of Outputs	Output Configuration	Function	Voltage - Output (Max)	Voltage - Input (Max) [Max]	Voltage - Output (Min/Fixed)	Topology	Voltage - Input (Min) [Min]	Frequency - Switching	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Output Type	Current - Output
Analog Devices LTC3619BEMSE#TRPBF	0.118 in 3 Lead	10-MSOP 10-TFSOP Exposed Pad	Surface Mount	2	Positive	Step-Down	5 V	5.5 V	0.6 V	Buck	2.5 V	2.25 MHz	-40 °C	125 ¯C	10-MSOP-EP	Adjustable	400 mA 800 mA
Analog Devices LTC3619EMSE#PBF	0.118 in 3 Lead	10-MSOP 10-TFSOP Exposed Pad	Surface Mount	2	Positive	Step-Down	5 V	5.5 V	0.6 V	Buck	2.5 V	2.25 MHz	-40 °C	125 ¯C	10-MSOP-EP	Adjustable	400 mA 800 mA
Analog Devices LTC3619BIMSE#PBF	0.118 in 3 Lead	10-MSOP 10-TFSOP Exposed Pad	Surface Mount	2	Positive	Step-Down	5 V	5.5 V	0.6 V	Buck	2.5 V	2.25 MHz	-40 °C	125 ¯C	10-MSOP-EP	Adjustable	400 mA 800 mA
Analog Devices LTC3619BIDD#TRPBF		10-WFDFN Exposed Pad	Surface Mount	2	Positive	Step-Down	5 V	5.5 V	0.6 V	Buck	2.5 V	2.25 MHz	-40 °C	125 ¯C	10-DFN (3x3)	Adjustable	400 mA 800 mA
Analog Devices LTC3619BIMSE#TRPBF	0.118 in 3 Lead	10-MSOP 10-TFSOP Exposed Pad	Surface Mount	2	Positive	Step-Down	5 V	5.5 V	0.6 V	Buck	2.5 V	2.25 MHz	-40 °C	125 ¯C	10-MSOP-EP	Adjustable	400 mA 800 mA
Analog Devices LTC3619EDD#PBF		10-WFDFN Exposed Pad	Surface Mount	2	Positive	Step-Down	5 V	5.5 V	0.6 V	Buck	2.5 V	2.25 MHz	-40 °C	125 ¯C	10-DFN (3x3)	Adjustable	400 mA 800 mA
Analog Devices LTC3619BEDD#PBF		10-WFDFN Exposed Pad	Surface Mount	2	Positive	Step-Down	5 V	5.5 V	0.6 V	Buck	2.5 V	2.25 MHz	-40 °C	125 ¯C	10-DFN (3x3)	Adjustable	400 mA 800 mA
Analog Devices LTC3619EMSE#PBF	0.118 in 3 Lead	10-MSOP 10-TFSOP Exposed Pad	Surface Mount	2	Positive	Step-Down	5 V	5.5 V	0.6 V	Buck	2.5 V	2.25 MHz	-40 °C	125 ¯C	10-MSOP-EP	Adjustable	400 mA 800 mA
Analog Devices LTC3619IDD#TRPBF		10-WFDFN Exposed Pad	Surface Mount	2	Positive	Step-Down	5 V	5.5 V	0.6 V	Buck	2.5 V	2.25 MHz	-40 °C	125 ¯C	10-DFN (3x3)	Adjustable	400 mA 800 mA
Analog Devices LTC3619BIDD#PBF		10-WFDFN Exposed Pad	Surface Mount	2	Positive	Step-Down	5 V	5.5 V	0.6 V	Buck	2.5 V	2.25 MHz	-40 °C	125 ¯C	10-DFN (3x3)	Adjustable	400 mA 800 mA

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	150	$ 4.75

Description

General part information

LTC3619B Series

The LTC3619B is a dual monolithic synchronous buck regulator using a constant frequency current mode architecture.The input supply voltage range is 2.5V to 5.5V, making it ideal for Li-Ion and USB powered applications. 100% duty cycle capability provides low dropout operation, extending the run time in battery-operated systems. Low output voltages are supported with the 0.6V feedback reference voltage. Channel 1 and channel 2 can supply 400mA and 800mA output current, respectively.The LTC3619B’s programmable average input current limit is ideal for USB applications and for point-of-load power supplies because the LTC3619B’s limited input current will still allow its output to deliver high peak load currents without collapsing the input supply. When the sum of both channels’ currents exceeds the input current limit, channel 2 is current limited while channel 1 remains regulated. The operating frequency is internally set at 2.25MHz allowing the use of small surface mount inductors. Internal soft-start reduces in-rush current during start-up. The LTC3619B is available in small MSOP and 3mm × 3mm DFN packages. The LTC3619B is also available in a low quiescent current, high efficiency Burst Mode®version, LTC3619.Light Load OperationLTC3619Low Ripple Burst Mode (<20mVpp), IQ< 50μALTC3619BPulse Skip (<5mVpp)ApplicationsHigh Peak Load Current ApplicationsUSB Powered DevicesSupercapacitor ChargingRadio Transmitters and Other Handheld Devices